O91.0 Infection of nipple associated with pregnancy, the puerperium and lactation

Name of the Condition

• Infection of nipple associated with pregnancy, the puerperium and lactation (O91.0)

Summary

This condition involves bacterial or fungal infection of the nipple, typically occurring during pregnancy, the postpartum period (puerperium), or while breastfeeding (lactation). It may present as localized inflammation, pain, or discharge and requires prompt evaluation to prevent complications like mastitis or abscess formation.

Causes

Infections often arise from bacterial colonization of the nipple, commonly due to Staphylococcus aureus or Candida species. Risk increases with cracked or damaged nipples, poor hygiene, or inadequate breastfeeding techniques, which allow pathogens to enter the skin barrier.

Risk Factors

• Cracked, sore, or damaged nipples from breastfeeding.
• Poor hygiene practices during lactation.
• History of previous nipple infections.
• Weakened immune system during pregnancy or postpartum.
• Use of tight or non-breathable clothing.

Symptoms

• Pain, tenderness, or burning sensation in the nipple.
• Redness, swelling, or warmth of the affected area.
• Discharge (pus or bloody fluid) from the nipple.
• Itching or scaling, especially with fungal infections.
• Fever or systemic symptoms in severe cases.

Diagnosis

Diagnosis is clinical, based on symptoms and physical examination. Cultures of nipple discharge or swabs may identify the causative organism. Imaging (e.g., ultrasound) is rarely needed unless abscess or deeper tissue involvement is suspected.

Treatment Options

• Antibiotics: Topical or oral antibiotics for bacterial infections.
• Antifungals: Creams or oral medications for Candida.
• Pain management: Analgesics for discomfort.
• Hygiene and care: Proper cleaning, air-drying, and avoiding irritants.
• Breastfeeding adjustments: Correcting latch techniques or temporarily pumping.

Prognosis and Follow-Up

With appropriate treatment, most cases resolve within 1–2 weeks. Follow-up ensures infection clearance and prevents recurrence. Severe or untreated cases may progress to mastitis or abscess, requiring additional intervention.

Complications

• Mastitis (breast tissue inflammation).
• Abscess formation.
• Chronic nipple pain or scarring.
• Discontinuation of breastfeeding due to discomfort.

Lifestyle & Prevention

• Maintain nipple hygiene with mild soap and water.
• Use lanolin or moisturizers to prevent cracking.
• Ensure proper breastfeeding latch to avoid trauma.
• Wear loose, breathable clothing.
• Avoid harsh soaps or alcohol-based products on the nipples.

When to Seek Professional Help

Seek care if symptoms worsen, fever develops, or discharge becomes purulent. Prompt evaluation is needed if breastfeeding becomes painful or if signs of systemic infection (e.g., chills) appear.

Tips for Medical Coders

Document the association with pregnancy, puerperium, or lactation to support the O91.0 code. Include details on infection type (bacterial/fungal) and any contributing factors (e.g., cracked nipples) for accurate coding. Ensure clinical notes align with the diagnosis to justify the code.